DC motorični krmilnik je v glavnem razdeljen na dve kategoriji, in sicer na generator neposrednega toka in DC krmilnik motorja. Spodaj smo povedali o dveh vrstah DC motornega krmilnika. 1. Dc generator controller, as a kind of can convert mechanical energy into direct current motor controller, commonly used in dc motor, electrolysis, electroplating, electric smelting, charging, etc. 2. Dc motor, as the direct current (dc) can be converted into mechanical energy of rotating device, the use of motor stator magnetic field, and cooperate with dc power supply to provide current to the rotor winding, rotor current and the Magnetno polje, ki ga ustvarja navor, ostane enako. Če povzamemo, dve glavni vrsti DC motornega krmilnika razumeta.